The medial malleolus is located on the inferiomedial aspect of the tibia. The fibula is on the lateral aspect of the lower limb. The talus and calcaneus are in the foot. The femur is in the upper portion of the leg.

The popliteal fossa is part of the femur. The lateral supracondylar line is also part of the femur. The soleal line is part of the tibia. The the subclavian groove is part of the clavicle and is an attachment site for the subclavius muscle.

Sesamoid bones are located in tendons or joint capsules. They reduce friction, increase the force the tendon can pull, and/or maintain the shape of tendons when they are taut. The largest sesamoid bone in the body is the patella. The pisiform is also a sesamoid bone, but is much smaller than the patella and is located in the wrist. The scaphoid and hamate are located in the wrist, but are not sesamoid.

The third cuneiform articulates with the navicular, second cuneiform, cuboid, and second, third, and fourth metatarsals.

Anatomical definitions determine the thigh to be the region between the knee and hip, and the leg to be the region between the knee and ankle. The thigh houses the femur, while the leg houses the tibia and fibula. The fibula articulates with the talus, one of the seven bones found in the ankle, at its distal end and the femur at its proximal end. This distal articulation is part of the ankle joint, while the proximal articulation is part of the knee joint.

The tibia is the larger bone of the two, and is responsible for carrying the majority of the weight of the lower limb.

The tibia and fibula are the two main lower leg bones, and make up the "shin". The femur is the thigh bone, located proximal to the lower leg. The patella is commonly known as the "knee cap" and does not make up the bones of the lower leg in this question. Be careful not to make the common spelling errors: tibula and fibia are not real structures.

The bone that forms the shin is the tibia. This is palpable along the anterior surface of the lower limb. The fibula is also located in the lower leg, but is not part of the prominent ridge felt on the front of the leg, as it is deep. The femur is the bone found in the thigh. The mandible is the jaw bone.

The metatarsals are analogous to the metacarpals of the hand and make up the body of the foot. The tarsals are the seven bones that make up the ankle. The carpals and metacarpals make up the wrist and body of the hand, respectively.

A bone marrow biopsy is a procedure involving the removal of the fluid and a sample of bone from the marrow found at the center of some bones in the body. Aspiration, on the other hand, is only the removal of the fluid. The sample is acquired through a needle under anesthesia. The sample contains red blood cells, white blood cells, and platelets, which can be observed under a microscope for abnormalities in numbers and shape. The results can also be used to look for spread of infection into the bone, as well as cancer.

The most common places for obtaining a sample in an adult are flat bones, namely the sternum and pelvic girdle. In children, the femur is a first choice. It is a long bone and is a major site of hematopoiesis in individuals younger than the age of 18.

Long bones have a body that is longer than it is wide (such as the femur, humerus, and phalanges). It consist of a tubular shaft (diaphysis) with growth plates (epiphyses) at either end. The shaft is composed of a hard outer surface of compact bone with a spongy interior (cancellous bone) that contains bone marrow.